Step 4: Power Up, Configuring The Protection System And Verifying; Operation - Allen-Bradley 857 Quick Start Manual

Step 4: Power Up,
Configuring the Protection
System and Verifying

Operation

Where higher (current) switching duty is required, such as breaker trip coils,
relays T1-T4 can be applied within the control circuit. Typically T1 is applied
as the main Trip output relay. The factory default settings apply all protective
element trip outputs to T1. Alarm functions are typically wired to output
relays A1-A5. However, any output relay can be configured as a trip or alarm
device via the Output Matrix.
Digital Inputs from 7...18 require a wetting voltage of between 18...265V DC
and 50...250V AC. Digital inputs from 1...6 are internally wetted using an
isolated 48V source from within the Protection System.
In this step, you must be familiar with the use the entry buttons on the front of
the Protection System or the SetPointPS software. For additional information,
see the Bulletin 857 Protection System User Manual
the SetPointPS Software Programming Manual, 857-PM001.
In this step you will:
• Power up each of your Protection Systems.
• Configure each Protection System by entering the minimum key
parameter values.
• Review the I/O configuration that is related to digital inputs and output
relays.
1. Connect a personal computer to the Protection System, by using an 857-
VX003 communications cable and by way of the front panel RS-232
communications port.
2. Apply AC or DC power to the Protection System.
When power is first applied and the Protection System has completed its
power on confidence tests, the following screen appears. The screen
could vary slightly between different firmware revisions or if the relay
was previously programmed.
3. Review the state of the colored status indicators on the front of the
Protection System. The Protection System IED has eight status
indicators on the front panel.
Power Green represents the units general status (POWER)
Error Red indicates an internal hardware malfunction (Error)
Comm Amber indicates when communication is established to the 857.
Alarm Amber indicates that a protection element is signaling an alarm condition (Alarm).
Trip Red indicates that a protection element has reached a trip level.
A, B, and C Programmable and available for customer use. Amber indicates it is in use.
Rockwell Automation Publication 857-QS001B-EN-P - April 2017
Installation Chapter 4
857-UM001 or refer to
31